Contacts of the strand formed by residues 50 - 57 (chain A) in PDB entry 1SHC
Residue contacts within the protein are
derived with the CSU software (Sobolev V., Sorokine A.,
Prilusky J., Abola E.E. and Edelman M. (1999) Automated
analysis of interatomic contacts in proteins.
Bioinformatics, 15, 327-332). A
short description of the analytical approach
is given at the end of the page.
Note:
Non-standard 3 letter residue
codes indicate a heterogroup. To identify
and analyse, use LPC software
Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC - hydrophobic-hydrophilic contact (destabilizing contact)
+/- - indicates presence/absence of a specific contacts
* - indicates residues forming contacts by their side chain
(including CA atoms)
Residues in contact with VAL 50 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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40A HIS* 3.1 21.1 - - + +
41A PRO* 3.4 4.5 - - + +
44A LYS* 3.0 38.1 - - + +
49A GLY* 1.3 78.3 - - - +
51A SER* 1.3 61.5 + - - +
52A TYR* 3.1 25.6 - - + +
125A THR* 2.7 23.6 - - - +
126A VAL* 2.9 25.9 + - + +
193A THR* 3.0 29.4 - - + -
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Residues in contact with SER 51 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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44A LYS* 5.2 5.9 - - - +
49A GLY 4.4 2.6 + - - -
50A VAL* 1.3 82.8 - - - +
52A TYR* 1.3 69.5 + - - +
53A LEU* 4.5 5.2 - - - +
123A THR* 3.9 8.5 + - - -
124A LEU 3.4 7.9 - - - -
125A THR* 3.5 18.4 - - - +
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Residues in contact with TYR 52 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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40A HIS* 3.2 27.7 - + - -
41A PRO* 3.3 18.8 - - + +
50A VAL* 3.1 40.8 - - + +
51A SER* 1.3 77.5 - - - +
53A LEU* 1.3 72.9 + - - +
54A VAL 4.1 0.2 - - - -
123A THR* 3.1 8.7 + - - -
124A LEU* 3.0 48.3 + - + -
126A VAL* 4.2 0.2 - - + -
183A PRO 3.8 0.2 - - - +
184A GLU 4.5 2.5 - - - +
185A GLY 4.2 4.0 - - - -
186A LEU* 3.0 51.8 - - + -
190A VAL* 4.4 2.0 - - + -
193A THR* 3.3 16.8 + - - +
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Residues in contact with LEU 53 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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51A SER 4.5 4.9 - - - +
52A TYR* 1.3 92.0 - - - +
54A VAL* 1.3 51.2 + - - +
121A PRO* 6.0 4.9 - - + -
122A ILE 3.8 4.9 - - - +
123A THR* 3.6 17.9 - - - +
136A ALA* 5.5 9.9 - - + -
182A CYS 2.6 24.6 - - - +
183A PRO 2.7 16.7 + - - +
184A GLU* 4.1 20.1 - - + +
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Residues in contact with VAL 54 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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53A LEU* 1.3 78.0 - - - +
55A ARG* 1.3 59.5 + - - +
121A PRO* 4.7 0.2 - - - -
122A ILE* 2.8 41.4 + - + +
124A LEU* 3.4 37.7 - - + -
164A VAL* 4.8 5.2 - - + -
180A LEU* 3.0 46.4 - - + -
181A GLU 3.9 2.7 - - - +
182A CYS 3.3 4.7 - - - -
183A PRO* 3.5 24.5 - - + -
186A LEU* 4.5 4.3 - - + -
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Residues in contact with ARG 55 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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53A LEU 4.2 0.2 - - - -
54A VAL* 1.3 72.4 - - - +
56A TYR* 1.3 72.3 + - - +
57A MET* 5.5 3.8 - - + -
91A GLY* 3.7 23.7 + - - -
93A LYS* 6.3 1.2 - - - +
119A GLY* 4.0 16.6 - - - -
120A MET 4.2 0.9 - - - +
121A PRO* 3.7 29.4 - - + -
180A LEU* 3.4 1.6 - - - -
181A GLU* 3.0 43.6 + - + +
182A CYS* 3.4 38.2 + - + +
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Residues in contact with TYR 56 (chain A).
Click here for Legend to table.
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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54A VAL 3.6 2.4 + - - -
55A ARG* 1.3 77.3 - - - +
57A MET* 1.3 62.2 + - - +
58A GLY* 2.7 32.0 + - - -
59A CYS* 2.8 33.4 - - - +
117A PHE* 4.5 6.5 - - + -
119A GLY* 3.0 21.1 + - - -
120A MET* 3.1 40.7 + - + +
122A ILE* 3.9 14.1 - - + -
142A ILE* 5.6 6.7 - - + -
178A HIS* 2.7 63.1 - + + -
179A ILE 3.7 7.9 - - - -
180A LEU* 3.5 20.4 - - + -
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Residues in contact with MET 57 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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55A ARG* 5.6 4.0 - - - -
56A TYR* 1.3 74.9 - - - +
58A GLY* 1.3 67.4 + - - +
60A VAL* 5.9 0.7 - - - +
85A VAL* 3.9 36.9 - - + +
86A CYS* 3.8 28.9 - - - -
89A VAL* 4.5 4.0 - - + +
91A GLY* 4.0 15.9 - - - -
92A ALA 4.2 2.7 - - - +
115A LEU* 4.6 1.1 - - - +
117A PHE 3.8 0.2 - - - -
118A ALA* 4.3 19.1 - - + -
119A GLY* 4.0 5.2 - - - +
179A ILE* 3.0 31.9 + - + +
181A GLU* 2.8 44.9 - - + +
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A short description of the
analytical approach
The contact analysis used in this page
is based upon the approach
developed in:
Sobolev V., Wade R.C., Vriend G.
and Edelman M. PROTEINS (1996)
25, 120-129.
Contact legitimacy depends on the hydrophobic-hydrophilic
properties of the contacting atoms. In order to
define it, for each inter-atomic contact,
eight atom classes have been introduced:
I Hydrophilic - N and O that can donate and accept hydrogen bonds
(e.g., oxygen of hydroxyl group of Ser. or Thr)
II Acceptor - N or O that can only accept a hydrogen bond
III Donor - N that can only donate a hydrogen bond
IV Hydrophobic - Cl, Br, I and all C atoms that are not in
aromatic rings and do not have a covalent bond to
a N or O atom
V Aromatic - C in aromatic rings irrespective of any other
bonds formed by the atom
VI Neutral - C atoms that have a covalent bond to at least one
atom of class I or two or more atoms from class II
or III; atoms; S, F, P, and metal atoms in all cases
VII Neutral-donor - C atoms that have a covalent bond with only one
atom of class III
VIII Neutral-acceptor - C atoms that have a covalent bond with only
one atom of class II
For each pair of contacts the state of legitimacy
is shown below:
Legend:
+, legitimate
-, illegitimate
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Atomic class I II III IV V VI VII VIII
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I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
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Warning!
Atom classes for heterogroups are automatically
assigned based on the atomic coordinates. However, in
three cases (see below) the automatic assignment
is currently ambiguous. In these
cases, the user is advised to manually analyse
the full list of contacts using
LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are
considered "aromatic" (Class V) if the ring is approximately
planar, and "hydrophobic" (Class IV) or "neutral" (Classes
VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
"hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
"carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).
Please E-mail any
questions and/or suggestions concerning this page to
Vladimir.Sobolev@weizmann.ac.il