Contacts of the strand formed by residues 119 - 122 (chain A) in PDB entry 1SXG
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 GLY 119 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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62A THR 3.7 2.0 + - - -
63A VAL* 3.1 3.7 - - - -
64A GLY 2.6 32.9 + - - -
117A VAL* 3.4 3.4 - - - +
118A ASP* 1.3 80.1 - - - +
120A ILE* 1.3 58.6 - - - +
140A VAL* 4.3 2.7 - - - -
141A PRO 3.3 11.9 - - - -
305A LEU* 3.8 18.6 - - - -
309A MET* 4.0 5.9 - - - -
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Residues in contact with ILE 120 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
64A GLY* 3.1 14.6 - - - +
66A ILE* 4.2 19.1 - - + -
109A LEU* 3.8 26.0 - - + -
112A MET* 3.8 24.9 - - + -
113A LEU* 4.9 2.0 - - + -
117A VAL* 3.9 10.1 - - + -
119A GLY* 1.3 79.5 - - - +
121A ILE* 1.3 78.9 + - - +
122A PHE 4.0 2.0 - - - +
138A SER* 5.2 0.2 - - - +
140A VAL* 3.6 22.7 - - + -
141A PRO 2.8 8.5 + - - -
142A VAL* 3.1 16.8 - - + -
143A VAL 2.9 25.5 + - - +
305A LEU* 3.7 6.8 - - - +
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Residues in contact with ILE 121 (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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63A VAL* 3.9 13.9 - - + -
64A GLY 2.8 8.4 + - - +
65A VAL* 3.3 12.4 - - + +
66A ILE 3.1 24.8 + - - +
82A ILE* 3.8 22.4 - - + -
120A ILE* 1.3 75.0 - - - +
122A PHE* 1.3 62.7 + - - +
123A MET* 4.7 1.6 - - + -
143A VAL* 3.4 9.4 - - + +
145A ALA* 3.6 30.5 - - + -
301A ALA* 4.5 17.0 - - + +
302A MET* 3.3 33.2 - - + -
305A LEU* 3.6 21.3 - - + -
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Residues in contact with PHE 122 (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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66A ILE* 3.2 33.4 - - + -
98A SER* 5.8 0.9 - - - -
105A GLU* 4.2 20.4 - - + -
109A LEU* 4.8 6.3 - - + -
120A ILE* 4.3 2.5 - - + -
121A ILE* 1.3 73.3 - - - +
123A MET* 1.3 72.7 + - - +
124A SER* 3.8 19.1 - - - -
127A VAL* 4.4 8.7 - - + -
131A HIS* 3.8 30.1 - + - -
135A LEU* 4.4 21.1 - - + -
142A VAL* 3.6 20.0 - - + -
143A VAL 3.0 7.5 + - - +
144A LEU* 3.2 50.1 - - + +
145A ALA 3.2 4.4 + - - +
147A SER* 4.3 0.3 + - - -
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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