Contacts of the strand formed by residues 1244 - 1246 (chain C) in PDB entry 6CA0
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 HIS1244 (chain C).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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1240C ASP 4.8 1.3 - - - -
1241C ASP* 2.9 29.9 + - + -
1242C LYS 4.4 1.9 + - - +
1243C MET* 1.3 94.4 + - - +
1245C ALA* 1.3 58.5 + - - +
1263C ALA 5.0 4.3 + - - -
1264C GLN* 5.1 2.2 - - + -
1265C PHE* 3.3 63.5 - + + +
351D GLY* 3.4 1.0 - - - -
352D ARG* 2.7 51.2 + - + +
372D MET* 4.5 1.3 - - - +
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Residues in contact with ALA1245 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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1243C MET* 4.8 2.6 - - - -
1244C HIS* 1.3 78.2 - - - +
1246C ARG* 1.3 62.1 + - - +
1264C GLN* 3.1 26.6 + - - +
1265C PHE 4.5 2.9 + - - +
350D SER 3.6 8.1 - - - +
351D GLY* 3.8 11.2 - - - +
372D MET* 3.7 34.1 - - + +
375D GLU* 5.6 3.8 - - + +
376D LEU* 4.8 9.9 - - + -
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Residues in contact with ARG1246 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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1245C ALA* 1.3 73.0 - - - +
1247C SER* 1.3 65.1 + - - +
1248C THR 4.4 1.3 - - - +
1249C GLY* 3.3 35.0 - - - +
1250C SER 3.7 4.0 + - - +
1251C TYR* 5.7 0.2 - - - -
1258C PRO* 3.4 14.7 - - - +
1259C LEU 3.2 27.2 + - - +
1262C LYS* 5.4 1.2 - - - +
1264C GLN* 3.4 16.5 + - - +
1265C PHE 3.3 22.9 - - - +
1266C GLY* 3.3 4.5 - - - -
1267C GLY* 3.1 36.7 - - - +
347D VAL 3.9 0.2 - - - -
348D ASP* 3.3 35.3 + - - +
349D TYR* 3.2 5.6 + - - +
350D SER 3.1 35.3 + - - +
375D GLU* 5.4 0.4 - - - -
376D LEU* 3.5 5.8 - - - +
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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