Contacts of the strand formed by residues 135 - 139 (chain A) in PDB entry 2CAN
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 LYS 135 (chain A).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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128A THR* 3.6 5.2 - - - -
133A TYR* 4.3 1.0 - - - +
134A HIS* 1.3 83.0 - - - +
136A VAL* 1.3 61.7 + - - +
305A LEU* 3.5 8.7 - - - +
306A CYS 3.1 26.3 + - - +
308A ASP* 2.9 32.3 + - - +
311A MET* 3.6 29.4 - - + -
312A LEU* 3.9 11.3 - - + +
48B TYR 3.3 10.4 + - - -
49B LYS* 3.0 22.0 + - - +
50B TYR 3.3 11.7 - - - +
51B GLY 3.0 25.6 - - - +
53B HIS* 3.3 21.8 + - - -
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Residues in contact with VAL 136 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
123A TYR* 4.8 7.6 - - + +
124A GLU* 3.8 23.1 - - + +
127A ILE* 3.9 21.1 - - + -
128A THR* 4.0 2.5 - - + -
135A LYS* 1.3 75.7 - - - +
137A LEU* 1.3 65.3 + - - +
138A PRO* 3.8 7.0 - - + +
303A ALA* 3.6 27.1 - - + -
304A VAL 3.3 13.0 - - - +
305A LEU* 3.9 18.4 - - + -
311A MET* 3.8 3.1 - - - -
50B TYR 3.1 12.4 + - - +
51B GLY* 3.5 3.3 - - - -
52B ALA 3.1 19.6 + - - -
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Residues in contact with LEU 137 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
113A ARG* 5.2 0.4 - - - +
136A VAL* 1.3 74.8 - - - +
138A PRO* 1.3 82.7 - - + +
139A MET* 3.8 12.0 + - + +
148A THR* 3.8 20.6 - - + -
152A LEU* 4.6 5.6 - - + -
303A ALA* 3.6 3.1 - - - -
304A VAL* 2.9 40.0 + - + +
311A MET* 3.8 17.5 - - - +
314A ILE* 5.1 5.8 - - + -
319A HIS* 4.2 13.5 - - - +
52B ALA* 3.5 21.5 - - + -
54B ASN* 3.8 32.3 - - + +
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Residues in contact with PRO 138 (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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113A ARG* 3.1 34.9 + - - +
120A LEU* 4.3 11.9 - - + -
123A TYR* 4.8 13.7 - - + -
124A GLU* 4.4 6.7 - - - +
136A VAL* 3.8 10.8 - - + +
137A LEU* 1.3 89.5 - - + +
139A MET* 1.3 73.9 + - - +
301A VAL* 6.3 1.3 - - + -
302A SER 3.9 6.7 - - - +
303A ALA* 4.8 2.7 - - + -
321A SER* 5.1 0.3 - - - -
324A GLY* 4.0 9.0 - - - -
325A GLY* 3.9 24.2 - - - +
52B ALA 5.6 0.9 - - - +
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Residues in contact with MET 139 (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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137A LEU* 3.8 13.6 + - + +
138A PRO* 1.3 90.4 - - - +
140A ASN* 1.3 65.7 + - - +
144A GLU* 3.7 33.7 - - + +
145A ALA* 4.5 4.0 - - - +
147A GLU* 6.4 0.2 - - + -
148A THR* 3.6 28.7 - - - +
300A PRO 4.5 0.2 - - - +
301A VAL* 3.9 5.9 - - - +
302A SER* 2.9 39.2 + - - +
303A ALA 5.2 0.2 - - - +
304A VAL* 4.8 1.3 - - + -
319A HIS* 3.9 16.8 - - + +
320A GLY 3.8 17.7 - - - +
321A SER* 3.9 19.1 - - - -
324A GLY* 4.4 6.9 - - - -
325A GLY 5.0 1.2 + - - -
180B ARG* 5.6 1.3 - - + -
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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